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Clear all filters - programmatically

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GridView
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Jon
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Jon asked on 21 Apr 2011, 08:33 PM
How I can programmatically clear all filters that have been manually set using the built in 'column' filters?
I want to add a 'CLEAR FILTERS' button.
thx again

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Vanya Pavlova
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answered on 21 Apr 2011, 08:54 PM
Hello Jon,

 

You may clear RadGridView's FilterDescriptors through calling the Clear method.


All the best,
Vanya Pavlova
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Jon
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answered on 21 Apr 2011, 08:59 PM
What do I call clear on?
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Vanya Pavlova
Telerik team
answered on 21 Apr 2011, 09:06 PM
Hello Jon,

 
You need to attach to the button's click event and clear the FilterDescriptors collection, as shown below:

private void Button_Click(object sender, System.Windows.RoutedEventArgs e)
        {
            this.playersGrid.FilterDescriptors.Clear();
        }

Kind regards,
Vanya Pavlova
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Jon
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answered on 21 Apr 2011, 09:20 PM
THX
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Guy
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answered on 06 Jul 2012, 08:56 PM
This is not a proper solution in my case. I want a button Clear All that clears filters on all columns, but if I clear the FilterDescriptors collection, the Filter PopUp do not reflect the changes.

1) Check a checkbox in the Filter PopUp to filter on checked element
2) Press Clear All button and do: this.playersGrid.FilterDescriptors.Clear();
3) Filter icon is still yellow (indicating we are still filtering) and if you click on the Filter icon, the element is still checked as if it was filtered. Note that this actually shows a false information to the user, because the Filter has been removed, but it is not reflected.

How can I do a Clear All on the filters that reflects inside of the Filter PopUps?

Thank You
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Arun
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answered on 03 Jun 2014, 10:44 AM
In my case it is not working:

Code:
MyGrid.FilterDescriptors.Clear();
MyGrid.Rebind();

the filter icon is still there..




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Dimitrina
Telerik team
answered on 03 Jun 2014, 10:57 AM
Hello,

You should clear the filters like so:
this.radGridView.FilterDescriptors.SuspendNotifications();
foreach (Telerik.Windows.Controls.GridViewColumn column in this.radGridView.Columns)
{
    column.ClearFilters();
}
this.radGridView.FilterDescriptors.ResumeNotifications();

The filtering concept is described in details in the Basic Filtering topic.

Regards,
Didie
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Arun
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answered on 03 Jun 2014, 11:16 AM
Thanks it works ,
but in case of Custom Filtering Control inherited from " IFilteringControl " it still shows the filter icon..
i have a Dependency property:
 public static readonly DependencyProperty IsActiveProperty =
            DependencyProperty.Register("IsActive", typeof(bool), typeof(FilterId), new PropertyMetadata(false));
public bool IsActive
        {
            get { return (bool)GetValue(IsActiveProperty); }
            set { SetValue(IsActiveProperty, value); }
        }
but i cant update this from other usercontrols.
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John
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Iron
answered on 16 Sep 2016, 08:34 PM

Just in case anyone would find this useful:

 

public void Prepare(Telerik.Windows.Controls.GridViewColumn columnToPrepare)        {            _column = columnToPrepare;            CollectionChangedEventManager.AddHandler(_column.DataControl.FilterDescriptors, FilterDescriptors_CollectionChanged);            IFilterDescriptor f = _column.DataControl.FilterDescriptors.OfType<FilterDescriptor>().FirstOrDefault(p => p.Member == "Readiness");            if (f == null)                f = _column.DataControl.FilterDescriptors.OfType<CompositeFilterDescriptor>().FirstOrDefault(p => p.FilterDescriptors.OfType<FilterDescriptor>().Any(v => v.Member == "Readiness"));            var l = new List<FilterDescriptor>();            if (f is CompositeFilterDescriptor)            {                l.AddRange((f as CompositeFilterDescriptor).FilterDescriptors.Cast<FilterDescriptor>());            }            else if (f is FilterDescriptor)                l.Add((f as FilterDescriptor));            IsActive = f != null;            foreach (var cb in this.FindVisualChild<Grid>().FindVisualChildren<CheckBox>())            {                if (f == null)                    cb.IsChecked = false;                else                {                    cb.IsChecked = (cb == production && l.Any(fd => (ReadinessState)fd.Value == ReadinessState.PRODUCTION))                        || (cb == development && l.Any(fd => (ReadinessState)fd.Value == ReadinessState.DEVELOPMENT));                }            }        }

 

private void FilterDescriptors_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)        {            var coll = sender as ObservableCollection<IFilterDescriptor>;            IFilterDescriptor f = coll.OfType<FilterDescriptor>().FirstOrDefault(p => p.Member == "Readiness");            if (f == null)                f = coll.OfType<CompositeFilterDescriptor>().FirstOrDefault(p => p.FilterDescriptors.OfType<FilterDescriptor>().Any(v => v.Member == "Readiness"));            CollectionChangedEventManager.AddHandler(coll, FilterDescriptors_CollectionChanged);            var l = new List<FilterDescriptor>();            if (f is CompositeFilterDescriptor)            {                l.AddRange((f as CompositeFilterDescriptor).FilterDescriptors.Cast<FilterDescriptor>());            }            else if (f is FilterDescriptor)                l.Add((f as FilterDescriptor));            IsActive = f != null;        }

 

 

 

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Vanya Pavlova
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Jon
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Guy
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Arun
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Dimitrina
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John
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Iron
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